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吲哚咪唑基钌(Ⅱ)联吡啶配合物与酵母RNA的相互作用
  • 期刊名称：高等学校化学学报
  • 时间：0
  • 分类：O614.82[理学—无机化学;理学—化学]
  • 作者机构：[1]河南中医学院药学院,郑州450008, [2]北京师范大学化学学院,北京100875
  • 相关基金：国家自然科学基金（批准号：20771016 20971016 90922004）; 北京市自然科学基金（批准号：2072011）; 高等学校博士学科点专项科研基金（批准号：20060027002）; 北京师范大学分析测试基金资助
  • 相关项目：新型钌基金属配合物的基础研究
关键词： 钌(Ⅱ), 配合物, 酵母RNA, 吲哚, 联吡啶, Ruthenium（Ⅱ）, Complex, Yeast-RNA, Indole, Bipyridine
中文摘要：

通过紫外-可见光谱和荧光光谱滴定、稳态荧光猝灭和溴化乙啶竞争键合实验研究了Ru（Ⅱ）配合物[Ru（bpy）（H2iip）2]（ClO4）2{bpy=2,2′-联吡啶,H2iip=2-（吲哚-3-基）-咪唑[4,5-f][1,10]-邻菲罗啉}的酵母RNA键合性质.结果表明,二者键合模式为嵌入键合,其键合常数为7.09×106L/mol,比小牛胸腺DNA的键合常数大,且比同类配合物[Ru（bpy）2（H2iip）]（ClO4）2的酵母RNA键合常数大.

英文摘要：

The binding of a novel ruthenium（Ⅱ） complex of [Ru（bpy）（H2iip）2（ClO4）2 {bpy=2,2′-bipyridyl,H2iip=2-（1H-indole-3-yl）-1H-imidazo[4,5-f-[1,10-phenanthroline},to yeast-RNA was investigated by UV-Visible and emission spectroscopy titrations,steady-state emission quenching and competitive binding with ethidium bromide experiments.The results suggest that the binding of this complex to the RNA be intercalative with a binding constant of 7.09×106 L/mol,which is higher than that to calf thymus DNA and the RNA binding constant of an analogous complex [Ru（bpy） 2（H2iip）（ClO4）2.

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